[mindslight]

I'd say blockchain naming and the system you describe are still both centralized. The authorities are distributed, but they're still collectively responsible for deciding on a single coherent root.

Compare with systems that don't revolve around making any coherent global view, like Petnames. In the context of Zooko's triangle - do the human readable name lookup once as part of a manual process, and then persist the relationship as decentralized/secure but not human-readable.